Leuco derivative of the gallocyanin series.



LEUCO DERIVATIVE GALILQC Application filed January 6, 1903. Serial No. 19$,

[ all wbom it may co'ncem:

So it known that I, WJLHELM LOMMEL, doctor of phiio's German Empiro, residingot Eiborfoid, Gern1any,iingdom of .irolssia, have invented new and useful Improvements in New Louco eriva'i'ivos of she Gailoc mnin Sovies, of which the foiiowing is 25 specifioa tion.

This iiivention relates to the immufzzotuz nd pzoduofion of new iouoo compounds of no goiiooyanio series whiob can be obtained y boating above 100 C. in suspension soiution dyes of the gaiiooyanin type, e? as buses or as saits. The hydroohiorids new ieuc-o ocmipounds dark powders oiobio in waterf On adding sodium 02M? I to their aqueous solutions tholroe bases oepamjto out wbicb. oxidize very rapidly onoxposure to air. They produce in'dyeing or printing considerably bbier or greener shades than tho the dyes from Mich they are pregmmd.

The following exampi'es will l'ui'tbor illustrate my invention, tho parts being by weight Exoinoio i. .1

iiili and gzdiooiinio oont-igmde with 0 mixture has to'bo of ooiosiine biuo nitroso-diothylmihon i to K50 22 parts of giyooi'in. The

vontinuoosiy stirred. 'ibo reaction is oon'ipiete, when 2i iosi soiubio in WPJQGA" with o yeilowish-brown part no i'i'om 801d) color which requires :ibo'oe ,2 hours. The moiiis than dissoivod in water. ."iho solution thus obtained can bousod without foi'tbor purificiwion-for dyoiiiig or printing or 16; now iouoo compound mm be prooigsitoiod from ibe solution bv the addition of common 9 "t. The bydmoblor-id of ibe bow iouoo compound i'o'ims 3H0? being dried and pul- Vo: axed. '0; dark powder which is solubio in Water and is soluble in com-ontmtod sidfurio acid with a. yoiiowisb-oi'owo coior which solo? turns biue by the addition of'oxidizmg ogeiiis. it pi'oduoos wbon printed with obmmium compounds on cotton indigo-blue Exemiplo H. In an autoclave with a stifz'roz' ;1 mixture of 20 provided parts of go!- iamin blue Qdyestufi' obtained ironl'nitrosodimoibyioniiin and. gailaminic acid) :ind 5U jipmi-s'of WaiEF is heated for 7 hours to :25" "tiodo. The brownproduct thus ob i'iwilezi om) used withoui umber pu ifimiophy chemist, Citizen of the {HOWE} ieuco oon'ipounds of Speoification of Letters Patsnt tion for dyei' i i i i I 1 i i i a I 1 i [I portion is I EL LOMMEL, OF ELBERFELL, GERIVILN'V EDR. BAYER & (10., OF ELBERFELD, GERMANY, A. CORPORA'ZEOIJ OF F look ASSEG-NOR To mmmw .-f

when primed cotton indigo- Exompio i i 2 mixed with 5%" on mg mixturo vi bi m'red is booted i tigmde for 3 boo ofi' i1z-oacoo. Th1 water can ho {mod tion for dyob The PM)?! od one in an ahaiogowi mannoz' on i, Jiing as zibo 1 dosoi'ibod oib dvos oi' the ga'diooyanin is or on treating the froo of the d Midis. "ho iouco oi-oducts'oon oiso be OXidL JO l and thou for dyeing or gain Having no vdosoz'il my invention i in vbiit moo' oi tho some what I claim Li nova and '1 Letters Paicni; is:-

The boroimdascribod pounds of the by beating; Wiib diiueiits above 200 -contigrade dyes of the .gaiiocyanin series, which new hobo-compounds are in the shape of tho bydroc biorids dork powders soluble in water, the free bases being Sfiuiffitfid by adding sodium ozu'bo' "to to tho aqueous ooiiiti ms;

and producing u dyoing or printing 0onsid-' ombiy biuor or greener shades than the known iouco oompolmds of the dyes from which. they are prepared, substominiiy as described.

2. The'boroin-doscribod new icuoo-compound of the gaiiocyzmin sorios obtuioobio by booting coiosi ino bluo with giycm'in above C. which now louco-compound'is in the shape of its hydroobiorid a dork powder which is soiubie in waitor and is sohiblo in concozitratmi sulfuric acid with o yoiiowishbrown col'or turning biuo by the addition of an\oxidizing ogjont; and produving whon print-oil with Chromium compounds on (:01;- ton indigo-bloc shades, substantially as do .vribod.

in testimony whereof I have hero my hand in tho Witnesses.

unto sot mooomao of two suim-nbm new louco-conh iiiocyamn series obmmimie 

